As a component of the Vanguard Target Maturity Corporate Bond series, VBCE distinguishes itself by functioning more like a standalone bond than a conventional bond fund. Rather than offering continuous exposure to a segment of the US corporate investment-grade bond market, this fund provides a specific, "bullet" maturity date of December 15, 2031. As this target date approaches, the fund's remaining maturity, duration, and yield-to-maturity will gradually diminish.